This dataset contains profile discrete measurements of dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity, nutrients, and oxygen collected during the NOAA Ship Henry B. Bigelow cruise HB2303 (EXPOCODE 33HH20230808) in New York Bight, North Atlantic Ocean, Stellwagen Bank National Marine Sanctuary from 2023-08-08 to 2023-08-24. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region off the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic & Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.

This data set consists of dissolved inorganic carbon (DIC), total alkalinity, pH on total scale, nutrients, water temperature, salinity and other variables collected from profile and discrete samples observations during the NOAA Ship Pisces cruise PC2305 (EXPOCODE 334B20231027) in the New York Bight, Northeast U.S. Shelf, North Atlantic Ocean from 2023-10-27 to 2023-11-13. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region off the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic & Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.

This data package contains data measured using an autonomous total alkalinity titrator on board the NOAA Ship Henry B. Bigelow cruises in 2021. Data were collected from the ship's underway seawater supply during the seven hydrographic surveys, from March 12 to November 3, 2021. Spatial data coverage extends from the Gulf of Maine to Cape Hatteras. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Optimizing Ocean Acidification Observations for Model Parameterization in the Coupled Slope Water". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown GOMECC2021 cruise RB2103 (EXPOCODE 33RO20210913) in the Gulf of Mexico, North Atlantic Ocean from 2021-09-13 to 2021-10-21. Data were collected from the ship's underway seawater supply during the GOMECC-4 cruise. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown cruise RB2105Transit (EXPOCODE 33RO20210814) in the Gulf of Mexico and West Coast of the U.S., North Pacific Ocean from 2021-08-19 to 2021-08-24. Data were collected from the ship's underway seawater supply during a transit from San Diego CA to Key West FL. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Henry B. Bigelow Ecosystem Monitoring (ECOMON2022) cruise HB2211 (EXPOCODE 33HH20220531) in the Gulf of Maine and Middle Atlantic Bight of the U.S. East Coast, North Atlantic Ocean from 2022-06-01 to 2022-06-17. Data were collected from the ship's underway seawater supply during the summer ECOMON survey. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown 2021 West Coast Ocean Acidification cruise RBWCOA2021 (EXPOCODE 33RO20210613) in the North Pacific Ocean from 2021-06-14 to 2021-07-20. Data were collected from the ship's underway seawater supply during the NOAA Ocean Acidification Program-funded West Coast Ocean Acidification (WCOA) cruise. This underway TA effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains Underway total alkalinity, water temperature, salinity and other variables collected from surface seawater during the NOAA Ship Ronald H. Brown cruise RB2104 (EXPOCODE 33RO20210315) in the Caribbean Sea, North Pacific Ocean, U.S. West Coast from 2021-03-17 to 2021-03-30. Data were collected from the ship's underway seawater supply during a transit from Key West FL to San Diego CA. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's AOML.

This data package contains data measured using an autonomous, automated total alkalinity titrator on board NOAA Ship Henry Bigelow. Data were collected from the ship's underway seawater supply during the seven hydrographic surveys, from May 8 to October 10, 2023. Spatial data coverage extends from the Gulf of Maine to Cape Hatteras. This effort was part of the NOAA Ocean Acidification Program (OAP) grant entitled "Expanding near-shore carbonate measurements along the East-coast and Gulf of Mexico through multiple collaborations". Along with total alkalinity, corresponding temperature and salinity measurements are included. Measurements of pCO2 taken on these cruises are available from NOAA's Atlantic Oceanographic and Meteorological Laboratory.

This dataset contains profile discrete measurements of dissolved inorganic carbon, total alkalinity, pH on total scale, water temperature, salinity, nutrients, and oxygen collected during the NOAA Ship Henry B. Bigelow cruise HB2302 (EXPOCODE 33HH20230609) in Gulf of New York Bight, North Atlantic Ocean, Stellwagen Bank National Marine Sanctuary from 2023-06-09 to 2023-06-27. Increasing amounts of atmospheric carbon dioxide from human industrial activities are causing changes in global ocean carbon chemistry ultimately resulting in a reduction in pH, a process termed ocean acidification. Studies have demonstrated adverse effects on calcifying organisms, particularly some invertebrates, corals, sea urchins, pteropods, and coccolithophores, but also on species of commercial interest such as oysters or crabs. In support of the coastal monitoring and research objectives of the NOAA Ocean Acidification Program (OAP), the Ecosystem Monitoring Cruises (ECOMON) are utilized to collect water samples to measure water column inorganic carbon and hydrographic parameters including nutrients. Samples are collected at three depths (surface, mid-depth and near bottom) at select stations on a quarterly basis in the northeastern Atlantic continental shelf region off the United States. Water samples are sent to and analyzed by scientists at the Atlantic Oceanographic & Meteorological Laboratory (AOML) for dissolved inorganic carbon, pH and total alkalinity concentrations. Additional samples are analyzed for nutrient concentrations at the University of Maine. These data are used to monitor short-long term coastal ocean acidification trends.